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<!--
Copyright 2006 The Closure Library Authors. All Rights Reserved.

Use of this source code is governed by an Apache 2.0 License.
See the COPYING file for details.
-->
<head>
<title>Closure Unit Tests - goog.ds.Expr</title>
<script src="../base.js"></script>
<script>
  goog.require('goog.ds.JsonDataSource');
  goog.require('goog.ds.XmlDataSource');
  goog.require('goog.ds.Expr');
  goog.require('goog.testing.jsunit');
</script>
</head>
<script>
  var jsDs;
  var jsObj = {
    Success: true,
    Errors: [],
    Body: {
      Contacts: [
        {
          Name: 'John Doe',
          Email: 'john@gmail.com',
          EmailCount: 300
        },
        {
          Name: 'Jane Doh',
          Email: 'jane@gmail.com'
        },
        {
          Name: 'Steve Smith',
          Email: 'steve@gmail.com',
          EmailCount: 305
        },
        {
          Name: 'John Smith',
          Email: 'smith@gmail.com'
        },
        {
          Name: 'Homer Simpson',
          Email: 'homer@gmail.com'
        },
        {
          Name: 'Bart Simpson',
          Email: 'bart@gmail.com'
        }
      ]
    }
	};

  function setUp() {
    jsDs = new goog.ds.JsDataSource(jsObj, 'JS', null);
    var dm = goog.ds.DataManager.getInstance();
    dm.addDataSource(jsDs, true);
  }

  function testBasicStuff() {
    assertNotNull('Get Body', goog.ds.Expr.create('$JS/Body').getNode());
  }
  
  function testArrayExpressions() {
    assertEquals(6, goog.ds.Expr.create('$JS/Body/Contacts/*').getNodes().getCount());
    assertEquals('John Doe',
        goog.ds.Expr.create('$JS/Body/Contacts/[0]/Name').getValue());
    assertEquals(305, goog.ds.Expr.create('$JS/Body/Contacts/[2]/EmailCount').getValue());
    assertEquals(6, goog.ds.Expr.create('$JS/Body/Contacts/*/count()').getValue());
    assertEquals(0, goog.ds.Expr.create('$JS/Errors/*/count()').getValue());
  }
  
  function testCommonExpressions() {
    assertTrue(goog.ds.Expr.create('.').isCurrent_);
    assertFalse(goog.ds.Expr.create('Bob').isCurrent_);
    assertTrue(goog.ds.Expr.create('*|text()').isAllChildNodes_);
    assertFalse(goog.ds.Expr.create('Bob').isAllChildNodes_);
    assertTrue(goog.ds.Expr.create('@*').isAllAttributes_);
    assertFalse(goog.ds.Expr.create('Bob').isAllAttributes_);
    assertTrue(goog.ds.Expr.create('*').isAllElements_);
    assertFalse(goog.ds.Expr.create('Bob').isAllElements_);
  }
  
  function testIndexExpressions() {
    assertEquals(goog.ds.Expr.create('node/[5]').getNext().size_, 1);
    assertEquals(goog.ds.Expr.create('node/[5]').getNext().parts_[0], '[5]');
  }
 

</script>
</head>
<body>
</body>
</html>
